Update dependency react to v19

Update react from 18.3.1 to 19.0.0

Change-type: patch

Author: balena-renovate[bot]

package.json

@@ -22,7 +22,7 @@
     "@mdx-js/react": "^3.0.1",
     "gray-matter": "^4.0.3",
     "prism-react-renderer": "^2.3.1",
-    "react": "^18.3.1",
+    "react": "^19.0.0",
     "react-dom": "^18.3.1"
   },
   "devDependencies": {